RE: Coefficient problem
- To: mathgroup at smc.vnet.net
- Subject: [mg36459] RE: [mg36421] Coefficient problem
- From: "David Park" <djmp at earthlink.net>
- Date: Sat, 7 Sep 2002 02:54:50 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Check out the Help for Coefficient. "Coefficient[expr, form, 0] picks out terms that are not proportional to form." Delta[eq_, x_] := Coefficient[eq, x]^2 - 4 Coefficient[eq, x^2] Coefficient[eq, x, 0] Delta[a x^2 + b x + c, x] b^2 - 4*a*c David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: CeZaR [mailto:pascal at go.ro] To: mathgroup at smc.vnet.net Hi, Now I'm trying to calculate this formula: Delta[eq_, x_]:=Coefficient[eq, x]^2 - 4 Coefficient[eq, x^2] Coefficient[eq, x^0] eq has this form a x^2 + b x + c But there is a problem with the x^0 coefficient! How can I overcome that? Thanks! CeZaR